Pakistan Foreign Minister Shah Mahmood Qureshi sent a letter to UN Secretary-General Antonio Guterres on Monday, seeking his help to reduce the tensions between the two countries, Pakistan Foreign Office said.

Under the Indus Waters Treaty, waters flowing in three of Indus tributaries -- the Sutlej, Beas and Ravi -- have been allotted to India; while the Chenab, Jhelum and Indus waters have been allotted to Pakistan.